• if you have problem when adding new node for cluster on docker,
    Could not setup Async I/O: Resource temporarily unavailable. The most common cause is not enough request capacity in /proc/sys/fs/aio-max-nr
  • try to check “cat /proc/sys/fs/aio-max-nr” => 65536
  • To solve the problem, you have to add the below line to your file /etc/sysctl.conf .
    fs.aio-max-nr = 1048576
  • After you have done, you can activate your settings by executing the following command: “sysctl -p /etc/sysctl.conf”
  • more detail https://www.kernel.org/doc/Documentation/sysctl/fs.txt

After reading a book “The Phoenix Project: A Novel about IT, DevOps, and Helping Your Business Win” by Gene Kim, I find a new terminology “The three ways: The Principles Underpinning Devops”. The character, called Bill, always uses these principles to tackle the issue in the story. …

Novandi Banitama

Tech geek looking for a new trend in the weird world

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